Thanks for posting the article.
But I'm not sure how the sense of community would translate in larger metro areas. Don't forget, our society seem to reinforce a sense of narcissism and focus on the individual that may or may not translate well in a crisis.
I fully expect people to help eachother out after an earthquake. Thats why I encourage everyone I know to take a CERT class. But for how long?
Hopefully our level of cooperation is not directly dependent on access to basic necessities.